The coordinates 45.251792, 27.948345 point to a location in the cartier Viziru III area of Brăila, Romania. The provided address format (Aleea Lebedei, bl. D4, sc. 3) corresponds to a standard residential building block. No specific historical, military, or bunker-related information for this precise location is confirmed by the available web search results, which consist only of general definitions and an application advertisement.
The site's status as a military bunker is therefore unverified. Further local archival research or on-site investigation would be required to confirm any military heritage significance.